KR100257925B1 - Heat-exchanger tube assembly device and method - Google Patents

Abstract

The present invention aims to reduce the number of workers, reduce troublesome manual work, improve work efficiency, and at the same time, reduce the space required for the packing box, ensure the tube insertion, and facilitate heat exchange. An object of the present invention is to provide a tube assembly apparatus and an assembly method.

In the tube assembly apparatus of the present invention, a tube assembly in which the U-shaped tube 13 for heat exchange is inserted into the hole 15 of the partition plate 14 arranged in a casing of the heat exchanger in a fully automatic manner at the opening end. In the apparatus, a tube gripping means 28 for collectively gripping a plurality of tubes 13 at a work site, and tube positioning means 29 for positioning the gripping tube to an insertion position with respect to a hole in a partition plate; The tube dispensing means 30 which sequentially takes out the tubes held by the tube holding means 28 one by one, and the tube which feeds the withdrawn tube to the partition plate 14 side and inserts it into the hole 15 of the partition plate; Means 32 are provided.

Description

Heat exchanger tube assembly device and assembly method

The present invention provides a heat exchanger (for example, a water heater, a boiler, a moisture separation heater, a grand steam evaporator, or a cooling water, a plurality of oils, etc.) provided as an example of a thermal power plant or a nuclear power plant. The present invention relates to a tube assembly for assembling heat exchangers and a method for assembling a heat exchanger tube in which a heat exchanger tube applied to a heating tube or a cooling tube is automatically performed.

19 to 20 illustrate the prior art. Moreover, the example is related to the assembly of the heat exchange tube as a heating tube in the horizontal feed water heater used in a thermal power plant or a nuclear power plant.

19 schematically shows the form of assembling the tube in the feed water heater. The feed water heater generally has a structure in which a tubular bundle is formed by storing a plurality of U-shaped tubes 2 called heating tubes into which the circulating water flows into the cylindrical frame 1. Each tube 2 is assembled by inserting into the hole 4 of the partition plate 3 arrange | positioned in parallel at the opening end side in the state which made the U-shaped curved part of the band end side of the tube 2 vertical. .

At the time of assembling the tube, as shown in FIG. 19, the base 1a of the cylindrical frame 1 is fixed to the height adjustment table 5, and the partition plate 3 is positioned at a predetermined height by the support table 6. 5 to 8 workers are inserted through the tube 2 one by one manually by the hand 4 of these partition plates 3, and it performs. Then, after the tubes 2 are all inserted into the holes 4 of the partition plate 3, the heat exchanger is completed by integrating and welding the cylinder 1b to the base 1a of the cylindrical frame 1.

FIG. 20 shows the planar shape of the partition plate 3 described above, and FIG. 21 shows an enlarged view of the state in which the tube 2 is mounted on the partition plate 3, and FIG. 22 shows the side shape of the tube 2. It is shown. As shown in these figures, the tube bundle is usually composed of 1000 to 30000 tubes 2, and the radius R of the U-shaped curved portion at the end of the band of the tube 2 is located at the center of the partition plate 3. This minimum is arranged, and both sides of the tube having the large radius R of the U-shaped curved portion are arranged on the upper and lower sides thereof sequentially (CL in Fig. 21 represents the gap between the first stage and the third stage). In this case, the tube 2 having a large radius R of the U-shaped curved portion is in a state of covering the end of the band end side of the tube 2 having a small radius R, so that the tube 2 is partitioned at the opening end side. In the usual assembly procedure to insert into. First, the tube 2 with a small radius R of the U-shaped curved portion is inserted into the partition plate 3, and the tube 2 with a large radius R is sequentially assembled. In the past, the assembling work of all the tubes 2 was regularly performed from the small radius R to the large radius R according to the above procedure.

The assembling method by this procedure will be explained with reference to FIG. Generally, the tube 2 was separately stored in the several packing boxes 7 after manufacture. Then, the packing box 7 containing the tube 2 with the smallest radius R of the U-shaped curved portion is placed at the uppermost level, the whole is arranged, and the packing box 7 is stacked on the work table 8 from the packing box 7 at the upper end. The cover 7a on the upper surface is removed, the tube 2 is suspended by using a beam and a plurality of nylon slings, etc. suspended from a crane (not shown), and the entire tube 2 is taken out of the packing box 7. It is loaded on the sleeper 9 arrange | positioned on the packing box 7, and the dirt of the front end of the tube 2 is wiped off.

Thereafter, 5 to 8 persons support the tube 2 on the sleeper 9 one by one, positioning the opening end of the tube 2 in the hole 4 of the partition plate 3, and walking the tube while walking. The support and insertion work of (2) are performed, and the far end worker press-fits the band end of the tube 2 to the predetermined position of the partition plate 3 until it enters. While the last operator completes the press-fitting operation, the operator returns to the rear from the operator on the front side, picks up the next tube 2 and prepares it. Similarly, the same radius R is similarly assembled in order below.

The assembly of the tube 2 prepared on the sleeper 9 is finished inserting, and the tube 2 of the same kind is hung up again by a crane (not shown), a hanging beam, a nylon ring, or the like. It removes again on the sleeper 9, wipes off the dirt of a front end, and performs the above operation.

By repeating the above operation, the assembly of the tube 2 of the minimum radius R dimension is finished for the first at the center position of the partition plate 3, and then for the second positioned up and down, The packing box 7 to be prepared is prepared in the required number of times, and the same operation is repeated, and a predetermined number of tubes 2 are placed in the holes 4 of the partition plate 3 in the order of the radix and the even end. Shovel. At this time, since the packing box 7 of the tube 2 requires a gap for taking out each stage, the tube 2 is stored in the packing box 7 by the base means and the even end.

The tube 2 is, for example, a long and thin shape having a maximum length L of 11 m at a maximum and a diameter D of 20 mm, and when the support point is small, the tube 2 tends to bend, making it difficult to insert a tube. Several people needed to work. Further, since the tubes 2 are taken out one by one from the packaging box 7 in which the tubes 2 are stored, it is difficult to take out later due to the collapse of the tubes 2 remaining in the packaging box 7. The necessary number of tubes 2 must be taken out on the packing box 7 beforehand, and the useless procedure before inserting work is needed.

In addition, the arrangement of the tube 2 to the feed water heater is, as shown in Figs. 20 to 22, the maximum radius (R) tube (2) in sequence from the tube (2) of the minimum radius (R). Although it is an arrangement conforming to the rule, since the U-shaped characteristic mentioned above needs to insert sequentially from the tube 2 of small radius R, the package which accommodated the tube 2 of the same radius R dimension was received. Many boxes (7) had to be prepared. In addition, in order to raise the storage efficiency of the packing box 7, when storing the tube 2 of a different radius R shape in the same packing box 7, the small radius R, for example on the way from the said procedure is carried out. After taking out the tube 2 of), the inconvenience of having to move the opened packing box 7 once to a separate place, and to put it away temporarily. At the same time, since the entire packing box 7 in which the necessary tubes 2 are accommodated must be opened, a huge storage space of the packing boxes was required.

In addition, since it is necessary to carry the tube 2 from the packing boxes 7 arranged in this way to the work table 8, when lifting by a crane etc. increases, while the use of a crane is required in another operation, It was necessary to stop the tube transport operation. As described above, in the conventional tube assembly for heat exchanger of heat exchanger, many problems are required, such as a large number of workers and complicated manual work, which are very inefficient, and a large space required for installation of a packing box. there was.

In view of the above circumstances, the present invention aims to reduce the number of workers, reduce troublesome manual work, improve work efficiency, etc., reduce the space required for the installation of the packaging box, and ensure and facilitate tube insertion. It is an object of the present invention to provide an assembling apparatus and an assembling method for heat exchange of heat exchangers.

1 is an overall explanatory diagram showing a device configuration according to an embodiment of the present invention.

2 is an enlarged perspective view showing the tube dispensing means in the embodiment.

3 is a perspective view showing the operation of the tube ejecting means in the embodiment;

4 is an enlarged perspective view of the tube dispensing means in the embodiment;

Fig. 5 is an enlarged side view showing the tube dispensing means in the embodiment.

6 is a side view showing a tube insertion state in the embodiment.

7 is an enlarged view illustrating main parts of FIG. 6.

8 is a perspective view showing a packing box in the embodiment;

9 is a plan view showing the interior of the packaging box in the embodiment;

10 is a side cross-sectional view of FIG.

11 is a perspective view showing the tube support structure in the packaging box in the embodiment;

12 is an explanatory diagram showing a partition plate used in an embodiment according to the method of the present invention.

FIG. 13 is an explanatory diagram showing a modification of the method shown in FIG.

14 is a side view showing a conveyor for use in the embodiment according to the method of the present invention.

Figure 15 is a plan view of an arrangement of devices showing an embodiment by the method of the present invention.

Fig. 16 is a perspective view showing an apparatus of another embodiment of the present invention.

FIG. 17 is an explanatory diagram of the apparatus shown in FIG. 16; FIG.

FIG. 18 is another explanatory diagram of the apparatus shown in FIG.

19 is a perspective view showing the prior art.

20 is an explanatory view of a partition plate used in the method according to the prior art.

21 is an explanatory diagram showing a general example of the tube arrangement;

22 is a side view showing a general example of the tube configuration.

* Explanation of symbols for main parts of the drawings

1: cylindrical frame 1a: temporary

1b: cylinder 2: tube

3: partition plate 4: hole

5: height adjustment stand 6: support stand

7: packing box 8: workbench

9: sleeper 11: water heater

12: cylindrical frame 12a: base

13: tube 14,14a, 14b: partition plate

15: hole 16, 16a, 16b, 16c: work cart

17: upper surface 18: adjustment table

19: support 20: guide rail

21: L-shaped frame 22: Packing box

23: tact 24: frame holding

25: horizontal arm 26: ejection part support arm

27: reverse beam 28: holding means

29: tube positioning means 30: tube taking out means

31 tube dispensing unit 32 tube dispensing means

33: hanger 34: hook

35 support arm 36 straight guide

37: slide engaging portion 38: drive motor

39: screw shaft 40: nut part

41: screw shaft cover 42: recess

43: rotary actuator 44: rotation axis

45: rotary actuator 46: rodless cylinder

47: Rotary Actuator 48: Rodless Sealer Head

49: pressing piece 50: grooved roller

51: ring 52: cylinder device

53: lateral movement guide 54: lateral movement rod

55: cylinder with lateral motion guide 56: longitudinal motion guide

57: Longitudinal Rod 58: Cylinder with Longitudinal Guide

59: roller support plate 60: shaft

61: spring 62: support plate

63: linear guide for sending parts 64: base

65: air cylinder for sending and moving 66: sending unit

67: straight guide for Shanghai East 68: roller support frame

69: guide roller 70: drive roller for feeding

71: driven roller 71a: driven roller for measurement

72: motor 73: drive screw shaft

74: roller support 75: clamp guide

76: clamp 77: air cylinder for clamp

78: connector 79: drive motor

80: drive belt 81: drive gear

82: encoder 83: air chuck

84: introduction mechanism 85: opening and closing air cylinder

86: mobile air cylinder 87: cylinder device

88: operating rod 89: press-fit air cylinder

90: force gauge 91: indentation bracket

92 control panel 93 control panel

94: first operation box 95: second operation box

96: cap 97: guide member

98: magnet 100: box body

101: cover 102: target bracket

103: sleeper 104: tube spacer

105: jig for preventing collapse 106: bottom plate

107: small piece 108: nut

109: rod 110: tube support jig

111: conveyor 112: stopper

113: pedestal 114: hydraulic mechanism

115: second conveyor 116: fork lift

In order to achieve the above object, in the invention of claim 1, the U-shaped tube for heat exchange whose intermediate portion is bent into a U-shape is assembled into the hole of the partition plate disposed in the casing of the heat exchanger by the automatic opening from the end of the opening. As a tube assembly device,

The U-shaped tube is loaded with a plurality of opening ends thereof facing the holes of the partition plate, placed on the mounting portion, lowered toward the mounting portion, and collectively holding one side of the stacked U-shaped tube, and then upwards. A holding means for holding the bent portion of each U-shaped tube in a vertical direction by rotating about 90 degrees with;

The tube held by the tube gripping means is moved in a vertical direction (Z axis) and a horizontal direction (Y axis), and rotated around an axis center in a U-shaped tube insertion direction (X axis). Tube positioning means for positioning at an insertion position with respect to the hole of the partition plate;

A tube take-out means having means for sequentially sending out one U-shaped tube held by the tube holding means one by one from the end, and means for receiving one U-shaped tube in conjunction with the sending means;

And a tube dispensing means for clamping the U-shaped tube drawn out by the dispensing means and driving toward the side of the partition plate and inserting the opening end of the U-shaped tube into the hole of the partition plate. Provides a tube heat exchanger for heat exchange.

In the invention of claim 2, in the tube assembly for heat exchanger of the heat exchanger according to claim 1, a work stage is provided with a mounting table for placing the packing box in which the tube is stored. In addition, the U-shaped curved portion at the end of the band is received in the horizontal direction and opened upward, and the tubes are stacked on each of the same radius in a state of being parallel to the inside and the outside of a plurality of types having different radii of the U-shaped curved portion. Provided is a tube assembly for heat exchange of a heat exchanger.

In the invention of claim 3, in the tube assembling apparatus for heat exchange of the heat exchanger according to claim 2, in the packing box, a longitudinally long tube spacer for preventing collapse that partitions the tube for each different radius of the U-shaped curved portion is provided. The tube assembly apparatus for heat exchange of the heat exchanger provided at intervals in the said tube length direction and arrange | positioned as a non-doping structure is provided.

In the invention of claim 4, in the tube assembly for heat exchange of the heat exchanger according to claim 1, the tube holding means, the tube taking out means and the tube sending means are parallel to move on a guide rail disposed on the upper surface. A single L-shaped frame provides a heat exchanger tube assembling apparatus, which is supported via a lifting and lowering horizontal arm.

In the invention according to claim 5, in the tube assembly for heat exchange of the heat exchanger according to claim 4, a drawer support arm that intersects them on a horizontal plane is hypothesized at the tip of the horizontal arm, and the drawer support arm is installed. A tube holding device for heat exchange of a heat exchanger is provided, wherein the tube holding means and the tube extracting means are rotatably supported.

In the invention of claim 6. In the heat exchanger tube assembling apparatus according to claim 5, a pair of L-shaped frames that move on a bed, each horizontal arm supported and lifted by them, and a support portion taken out of each horizontal arm Heat exchanger of the heat exchanger, characterized in that the tube positioning means for setting the insertion position by rotating the tube horizontally, vertically and horizontally by the reversing beam provided rotatably to the arm and the support arm. Provides a tube assembly device for.

In the seventh aspect of the present invention, in the tube assembly for heat exchanger of the heat exchanger according to claim 5, the tube gripping means and the tube taking out means constitute a set of tube takeout units in combination with each other, and the tube takeout unit is Provided is a heat exchanger tube assembly apparatus of a heat exchanger, characterized in that arranged in a plurality of groups, spaced along the longitudinal direction of the take-out support arm.

In the invention of claim 8, in the tube assembling apparatus for heat exchanger of the heat exchanger according to claim 2, the tube holding means can be inserted downward in a substantially vertical state in the packing box, and is moved laterally in the packing box. A thin plate-shaped hanger that can abut on a group of tube side surfaces stacked in a single row of upper and lower rows accommodated therein, a hook inserted under the lowermost tube protruding transversely to the lower end of the hanger, and parallel to the hanger. And a support arm arranged to be able to abut on the other side of the group of tubes in a vertical state rotatable by a rotary actuator, and at the same time the lower end of the hook engages the group of tubes with the hanger. It provides a tube assembly for heat exchange of the heat exchanger.

According to a ninth aspect of the invention, in the tube assembly for heat exchanger of the heat exchanger according to claim 8, the hook is configured to be rotatable in a direction in which the front end of the hanger and the support arm are opened by a rotary actuator. It provides a tube assembly for heat exchanger of the machine.

In the invention of claim 10, in the tube assembling apparatus for heat exchange of the heat exchanger according to claim 9, the tube extracting means includes a plurality of tubes held by the hanger and the support arm of the tube gripping means. A press piece for extruding to the hook side of the hook, an extrusion cylinder for driving the press piece, a grooved roller for supporting one tube positioned on the hook side from below, a link for supporting the grooved roller, And a cylinder device which moves the link up and down and transversely in a state in which the hook is rotated as the hook opens the tip of the hanger and the support arm to take out the tube supported by the grooved roller laterally. Provided is a tube assembly for heat exchange of a heat exchanger.

In the invention of claim 11, in the tube assembling apparatus for heat exchange of the heat exchanger according to claim 10, the grooved roller for supporting the tube downward and the link for supporting the grooved roller are connected by the shaft at the tube extraction position. It is rotatably supported and is arranged at a position where the tube is always drawn out by the spring, and when the U-shaped curved portion passes when the tube is inserted, it is possible to move back in the tube insertion direction via the axis. It provides a tube assembly for heat exchange of the heat exchanger characterized in that.

According to a twelfth aspect of the present invention, in the tube assembly for heat exchanger of the heat exchanger according to claim 11, the tube dispensing means is supported by a base, a roller support frame supported by the base, and a roller support frame. A guide roller for supporting the end of the tube by a reciprocating motion along the tube insertion direction, and a drive roller for feeding that is disposed on the downstream side of the tube insertion direction of the guide roller of the roller support frame and rotates in a state where the tube is sandwiched and conveyed to the partition plate; And it provides a tube assembly for heat exchange of the heat exchanger having a driven roller.

According to a thirteenth aspect of the present invention, in the tube assembly for heat exchanger of the heat exchanger according to claim 12, the tube dispensing means reciprocates in the tube insertion direction together with the guide roller or in place of the guide roller to move the tube out of the tube. In the present invention, there is provided an apparatus for assembling a heat exchanger tube, characterized in that it has an introduction mechanism with an air chuck leading to a portion of a driving roller and a driven roller.

In the invention according to claim 14, in the tube assembly for heat exchange of the heat exchanger according to claim 13, the tube dispensing means has a cylinder device for press-fitting the band end side, which is a U-shaped curved portion at the rear end of the tube, to the partition plate side. It provides a tube assembly for heat exchange of the heat exchanger.

According to a fifteenth aspect of the present invention, in the tube assembly for heat exchange of heat exchangers according to claim 14, the tube dispensing means has a force gauge in a cylinder device that presses the band end of the tube. It provides a tube assembly for heat exchange.

According to a sixteenth aspect of the present invention, in the tube assembly for heat exchange of a heat exchanger according to claim 1, a cap having a tapered tip is sharply mounted on an opening end side of the tube, and at the lower portion of the partition plate, Provided is a tube assembly for heat exchange of a heat exchanger, characterized in that a guide member for guiding the cap is provided.

According to a seventeenth aspect of the present invention, in the tube assembly for heat exchanger of the heat exchanger according to claim 2, the tube gripping means includes a tube gripping after the next time based on the first tube gripping and taking out position in the packing box; Provided is a heat exchanger tube assembling apparatus for a heat exchanger, characterized by having a self-determination function for automatically performing position acquisition of a position to be taken out.

In the invention of claim 18, in the heat exchanger tube assembling apparatus of the heat exchanger according to claim 1, the tube dispensing means self-determines the tube insertion position with respect to the hole of the partition plate on the basis of the work data to determine each tube insertion position. Provided is a tube assembly for heat exchange of a heat exchanger, comprising a control function for automatically performing position acquisition.

According to a nineteenth aspect of the present invention, in the tube assembly for heat exchange of a heat exchanger according to claim 1, at least any one of the tube holding means, the tube positioning means, the tube taking out means, and the tube sending means has an abnormal load detection function. It provides a heat exchanger tube assembling apparatus of the heat exchanger, characterized in that the automatic load avoidance or emergency stop function.

In the invention of claim 20, in the tube assembly for heat exchange of the heat exchanger according to claim 1, the tube dispensing means has a speed detecting means for detecting an operation speed of the tube to be sent out. Provide a tube assembly device.

In the invention of claim 21, the U-shaped tube for heat exchange is automatically inserted through the opening of the partition plate arranged in the casing of the heat exchanger using the tube assembly device for heat exchange of the heat exchanger according to claim 1 at the opening end side. A method of assembling a tube, in which a predetermined number of tubes are combined and taken out in a state of being coupled to a packing box, and then loaded into a predetermined insertion position, taken out one by one at this loading position, and inserted into the holes of the partition plate. It provides a method for assembling the tube for heat exchange of the heat exchanger, characterized in that the assembly.

In the invention of claim 22, in the method for assembling the heat exchanger tube of the heat exchanger according to claim 21, a plurality of groups in which the holes of the partition plate are formed in one group including different radiuses of the U-shaped bent portion of the tube to be inserted therein It is divided into groups, and the tubes stored in the packing boxes are classified according to each group, all the tubes of one group are inserted into the holes, the packing boxes are replaced, and the tubes of the following packing boxes are assembled. Provided is a method for assembling a tube for heat exchange of a heat exchanger.

In the twenty-third aspect of the present invention, in the method for assembling a tube for heat exchange of a heat exchanger according to claim 22, when the tube is taken out of the packing box, the U-shaped curved portion at the band end side of the tube is in a horizontal state, and the tube is taken out. In the position where the U-shaped curved portions are vertical, and the U-shaped curved portions are inserted into the holes of the partition plate sequentially from a group of tubes having a small radius. To provide.

According to a twenty-fourth aspect of the present invention, in the method for assembling heat exchange tubes of a heat exchanger according to claim 21, a plurality of heat exchangers are arranged in parallel, and tube assembly for each of these heat exchangers is performed by parallel work or sequential work. It provides a heat exchange tube assembly method of the heat exchanger.

In the invention according to claim 25, the heat exchanger tube assembling method of the heat exchanger according to claim 21, wherein the introduction of the packing box to the work site and the removal of the work site are carried out by using a conveyor. It provides a method for assembling the tube for heat exchange.

In the twenty-sixth aspect of the present invention, there is provided a tube assembling method for carrying out the method of the twenty-first aspect by using the tube assembly apparatus for heat exchange of the heat exchanger according to claim 1, wherein the tube holding means, the tube positioning means, the tube extracting means, and the tube. Provided is a method for assembling a heat exchanger tube for a heat exchanger, comprising assembling a tube for linear heat exchange using a portion that handles one side of the U-shaped tube of the delivery means.

In the invention of claim 27, there is provided a tube extracting apparatus which takes out one by one in a state in which a plurality of heat exchange tubes are supported in parallel and sends them out in one direction, comprising: a pressing piece for extruding a plurality of tubes, and an extrusion cylinder for driving the pressing piece. And a grooved roller for supporting one tube located on the hook side from below, a link for supporting the grooved roller, and the link as the hook opens the hanger and the support arm tip. A tube ejecting device is provided, which has a cylinder device which moves upward and downward and laterally in a rotated state, and performs the operation of taking out a tube supported by the grooved roller laterally.

In the invention according to claim 28, in the tube extracting apparatus according to claim 27, the grooved roller supporting the tube from the lower side and the link supporting the grooved roller are rotated by the shaft at the tube extraction position. It is supported and is always arranged at the tube take-out position by a spring, and when the U-shaped curved portion passes at the time of tube insertion, the tube is pulled out in the direction of tube insertion through the axis. Provide the device.

In the invention of claim 29, there is provided a tube dispensing apparatus which receives a heat exchange tube at a fixed position and feeds it in one direction.

A base, a pair of roller support frames which are supported on the base so as to be movable up and down, and which are arranged on the upper and lower portions of the U-shaped tube, and which receive the tip of the tube by reciprocating according to the tube insertion direction supported by the roller support frame. A guide roller, an upper drive roller for feeding the tube, and a lower drive roller for rotating and conveying the tube disposed in the tube insertion direction downstream of the guide roller of the roller support frame to the partition plate; Provide a tube delivery device.

According to a thirty-third aspect of the invention, in the tube dispensing apparatus according to the thirty-ninth aspect, the air chuck reciprocates in the tube insertion direction together with or instead of the guide roller to guide the tube to the portions of the driving roller and the driven roller. It provides a tube delivery device characterized in that it has an introduction mechanism attached.

According to a thirty-first aspect of the present invention, in the tube dispensing apparatus according to claim 29, there is provided a measuring driven roller for detecting an upper feed amount and a lower feed amount of the U-shaped tube, respectively, in the vicinity of the upper drive roller for lowering the tube and the lower drive roller. And a feeding stop control means for stopping the feeding device when the difference in the feed amount detected by each measuring driven roller becomes equal to or more than a predetermined value.

Embodiment of the Invention

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of the heat exchanger tube assembly apparatus and the assembly method of a heat exchanger concerning this invention is described with reference to drawings. In addition, this embodiment demonstrates the case where it applies to the tube assembly which is a heating tube of the water heater in a power plant.

First, the main configuration of the tube assembly apparatus according to FIGS. 1 to 5 and the tube assembly method using the same will be described. 1 is a perspective view schematically showing the overall configuration of the apparatus, Figures 2 and 3 are perspective views showing the configuration and operation of the tube holding means and the tube take-out means, Figures 4 and 5 are the tube delivery means and its A perspective view and a side view showing the operation.

As shown in FIG. 1, the water feed heater 11 targeted by this embodiment is a heating tube which introduces a circulating water into the cylindrical frame 12, and accommodates many U-shaped tubes 13, and receives a tube bundle. Each tube 13 is inserted into the holes 15 of the plurality of partition plates 14 arranged in parallel, with the U-shaped curved portion at the band end side of the tube 13 being vertically inserted from the opening end side. By assembling.

In this embodiment, the base 12a of the cylindrical frame 12 which comprises this feed water heater 11, and the some partition plate 14 for inserting the tube 13 are mounted on the work cart 16. As shown in FIG. The upper surface 17 is movable. In addition, the base 12a of the cylindrical frame 12 is mounted on the work cart 16 through the adjusting table 18, and each partition plate 14 is supported on the work cart 16 through the support 19. The height of the base 12a of the cylindrical frame 12 is fixed by a bolt or the like. The height adjuster 18 is adjusted to match the height of the tube insertion hole 15 of the partition plate 14.

The tube assembly device of the present embodiment for inserting the tube 13 into the partition plate 14 of the water feed heater 11 as described above is movable and parallel on the guide roller 20 disposed on the upper surface 17. The apparatus main body part which has one L-shaped frame 21, and the tube storage packing box 22 for supplying the tube 13 to this apparatus main body part, The guide roller 20 has the tube insertion direction. It is arrange | positioned along the direction (Y direction) orthogonal on a horizontal plane with respect to (X direction).

Each L-shaped frame 21 is a flat mounting table 23 having a bogie structure capable of traveling in the Y-direction along the guide rollers 20 and loading the packing box 22 thereon, respectively. It is comprised by the vertical frame support 24 provided in the end of 23. As shown in FIG. Each frame support 24 is supported in parallel with each other so that the horizontal arm 25 is movable in an up-down direction (Z-axis direction), that is, can be moved up and down, in one supporting state. In addition, the lifting and lowering movement of each horizontal arm 25 is performed synchronously by the linear guide, motor, screw shaft, etc. which are not shown which were provided between the frame support 24. As shown in FIG. Moreover, these mounting base 23, the frame support 24, the horizontal arm 25, etc. are comprised so that they may mutually divide, and when it is not in use or moves installation, it divides and can be accommodated in the minimum space.

At the distal end of each horizontal arm 25, a takeout support arm 26 having a length similar to that of the tube 13 is provided in an arrangement orthogonal to them on the horizontal plane. The take-out support arm 26 is for supporting a tube take-out means and the like, which will be described later, and the tube insertion direction (X direction) by a moving unit made of a motor, a rack and gear, a straight guide, or the like (not shown). It can move in the direction orthogonal to (Y direction). Moreover, as a means for advancing the take-out part support arm 26 to the horizontal arm 25 one by one, one side becomes a fixed part, and the other part combines a rotation axis and a linear axis so that the alignment part can be aligned. It is equipped with the structure. A reverse beam 27 is supported in the lower part of the takeout support arm 26 in parallel thereto, and the reverse beam 27 is rotated around a horizontal axis (X axis) by a rotary actuator (not shown), thereby The predetermined angle can be rotated in the direction.

In this reversing beam 27, tube gripping means 28 for taking out a predetermined number of tubes 13 from the packing box 22 collectively, and the tube 13 gripping the tube 13 are holes in the partition plate 14; The tube positioning means 29 which positions the insertion position with respect to (15), and the tube extraction means 30 which take out the tube 13 hold | maintained by the tube holding means 28 one by one sequentially are provided. The tube gripping means 28 and the tube taking out means 30 are as follows. They are combined with each other to constitute a set of tube takeout unit 31, and are arranged at a plurality of intervals along the longitudinal direction (X direction) of the takeout support arm 26, and both sides of the U-shaped tube 13 Each of them is held at a plurality of locations along the longitudinal direction and taken out from the packing box 22, and placed at a predetermined insertion position, and at the same time, the tubes 13 to be inserted are taken out one by one at the insertion position to prepare for insertion. will be.

In addition, the tube positioning means 29 is comprised by the extraction | support part support arm 26 and the inversion beam 27 which hold | support the tube extraction part unit 31, and was gripped by the tube holding means 28. The tube 13 is rotated about the horizontal direction (Y direction), the vertical direction (Z direction), and the horizontal axis (X axis) orthogonal to the tube insertion direction (X direction), and the tube insertion position is changed. To set.

In addition, a tube dispensing means 32 is disposed near the rear end of the tube dispensing unit 31 in the X-axis direction, that is, in the vicinity of the tube dispensing unit 31a approaching the partition plate. The tube dispensing means 32 is provided at one end of the dispensing portion support arm 26, and discharges the tube 13 taken out by the tube dispensing means 30 to the partition plate 14 side. It has a function to insert into the hole 15 of 14).

The configuration and operation of the tube gripping means 28 and the tube take-out means 30 described above will be described with reference to FIGS. 2 and 3. FIG. 2 shows a state when gripping the tube 13 from the packing box 22 and taking it out, and FIG. 3 shows a state when taking out the gripped tube 13 one by one at an insertion position.

The tube gripping means 28 includes a hanger 33 for attaching a group of tubes 13 stacked in one of the packing boxes 27 from one side, and a hook for supporting the lowermost tube 13 from below. 34, a support arm 35 for fitting the group of tubes 13 on the opposite side of the hanger 33, and a drive mechanism for operating them. Moreover, since these constituent members are holding both sides of the tube 13 at the same time in a horizontal state, the U-shaped curved portions are provided in pairs adjacent to each other, that is, facing in opposite directions, respectively. In FIG. 3, only one tube holding means 28 for holding one side of the U-shaped tube 13 is shown, and the illustration of the other tube holding means for holding the other side is omitted.

The hanger 33 is constituted by a slightly wide rectangular thin plate, the surface of which is disposed in parallel with the longitudinal direction of the tube 13, and one end side bent in an L shape is provided on the inversion beam 27. It is supported by the pair of rail-shaped linear guides 36 provided through the slide engaging part 37. FIG. In the center position of the straight guide 36, a screw shaft 39 which is reversely rotated by the drive motor 38 provided in the inversion beam 27 is disposed in parallel with this, and the screw shaft 39 is hanger 33. By screwing into the nut part 40 provided in the), the hanger 33 can reciprocate in the Y direction by the rotational drive of the drive motor 38. In addition, since the linear guide 36 is fixed to the inversion beam 27, the hanger 33 is rotated integrally around the X axis center together with the inversion beam 27, and in a substantially horizontal state in FIG. The hanger 33 can be stretched substantially vertically as shown in FIG. 2 by the rotation of the inversion beam 27. In addition, the screw shaft 39 is covered with the screw shaft cover 41 in order to prevent dripping of the holding flow.

The hook 34 is in the form of a small piece of thin plate disposed at a lower end of the hanger 33 in a vertical state and intersects with them (horizontal state), and has a thickness substantially the same as that of the hanger 33. It has a claw-shaped recess 42 at the edge. The hook 34 is fixed to the lower end of the vertical rotational shaft 44 connected to the rotary actuator 43 fixed to the inversion beam 27, and is rotated around the two axes, thereby pulling the lower surface of the hanger 33. It is possible to selectively change the position to the contact state and the position out of this.

The support arm 35 is a narrow, elongate rod-shaped narrower than the hanger 33, has the same thickness and the same length as the hanger 33, and is parallel to one side of the hanger 33 by removing a certain gap. It is arranged. This support arm 35 has one end connected to a rotary actuator 45 provided at the upper end of the hanger 33 and the other end rotated about the Y axis, and is represented by an imaginary line at the horizontal position shown by the solid line in FIG. Can move to vertical position. When this support arm 35 is rotated to the vertical position, the lower end portion engages with the recess 42 of the hook 34, and comes to a stationary fixed state at that position.

In such a configuration, in the case of holding the tube 13, the hanger 33 is rotated around the X-axis center with the inversion beam 27 in the horizontal state shown in FIG. 1, and the vertical state shown in FIG. At the same time, the second direction in which the L-shaped frame 21 is moved to the predetermined tube 13 position stored in the packing box 22 by the Y-direction movement and the support arm 35 is kept in the open position is obtained. The horizontal arm 25 is lowered in the state of FIG. Thereby, the hanger 33 is arrange | positioned to one side of the tube 13 via the inner space of the packing box 22, and the hook 34 is arrange | positioned under the tube 13 of the lowest end.

Thus, by driving the drive motor 38, the screw shaft 39 is rotated, the hanger 33 is moved along the straight guide 36 to approach the tube 13, and the hanger 33 is first U-shaped. While abutting on one side of one side of the tube 13, the hook 34 is inserted below the lowermost tube 13. Next, by driving the rotary actuator 45, the support arm 35 is rotated from the horizontal state shown by the solid line in FIG. 2 to the vertical state shown by the imaginary line, thereby supporting the support arm 35 by the tube 13. Abut on the other side of one side of the to hold the gripping state. In addition, other holding means of the adjacent same configuration which are not shown are also operated simultaneously, and the other side of the tube 13 is also hold | gripped.

Thereafter, when the hanger 33 is rotated about 90 degrees in the second state and above the ground by the rotation of the inversion beam 27, as shown in FIG. 3, the hanger 33 is in a substantially horizontal state. As a result, the plurality of tubes 13 are horizontally arranged above the hanger 33, and the U-shaped curved portion at the end of the band is supported in a vertical state. This state is a state shown in FIG. 1, and each side of the tube 13 is a state arrange | positioned up and down. As described above, the horizontal arm 25 is movably supported by the frame support 24 in the Z-axis direction, and the ejection support arm 26 is movably supported by the horizontal arm 25 in the Y-axis direction. The inversion beam 27 is supported by the ejection support arm 26 so as to be able to rotate the axial circumference of the X axis, so that the ejection support arm 26 and the inversion beam 27, which are the tube positioning mechanism 29, are driven. The U-shaped tube 13 is moved in the Y-direction, the Z-direction, and the X-axis rotates, thereby positioning the U-shaped tube 13, that is, setting the U-shaped tube insertion position with respect to the partition plate 14. do. Thereafter, one of the plurality of gripped tubes 13 is sequentially taken out by the tube dispensing means 30 from the one positioned at the distal end of the hanger 33 to prepare for insertion into the partition plate 14 side. .

The tube dispensing means 30, as shown in Figs. 2 and 3, has a rodless cylinder 46 for extrusion provided on the surface of the hanger 33 in an arrangement opposite to the support arm 35. Have The rodless cylinder 46 has one end connected to a rotary actuator 47 provided at the upper end of the hanger 33 and the other end rotates about the Y axis, and is positioned in a straight line with the support arm 35 (the position of FIG. 2). ) Can be rotated by 90 ° to each other to a position parallel to the support arm 35 (position in FIG. 3). On the side of the rodless cylinder 46, a rodless cylinder bed 48, which is a mover, is provided with a pressing piece 49 that is substantially L-shaped from the side. The pressing piece 49 is arranged in a horizontal tube gripping state as shown in FIG. 3 so that the rodless cylinder 46 is disposed in parallel with the support arm 35 and then moved to the hook 34 side. A function of extruding the plurality of tubes 13 held by the hanger 33 and the support arm 35 toward the hook 34 side. However, this extrusion action is performed with the hook 34 closing the tip side of the hanger 33, as indicated by the solid line in FIG. 3, and stopping with the respective tubes 13 aligned with the hook 34 side. It is set to. After this alignment, the hook 34 rotates as shown by the phantom line in FIG. 3 to open the tip side of the hanger 33, and in this state, the grooved roller 50 has one tube on the tip side. Withdraw (13).

That is, the tube ejecting means 30 is the front end of the rodless cylinder 46 and supports the U-shaped grooved roller 50 that supports the tube 13 downward, and the grooved roller 50. And a cylinder device 52 for moving the ring 51 in the vertical and horizontal directions to take out the tube 13 laterally. The cylinder device 52 includes a cylinder 55 with a lateral motion guide having a lateral motion guide 53 and a lateral motion rod 54 provided on the front end side of the rodless cylinder 46, a longitudinal motion guide 56, and The cylinder 58 with a longitudinal guide which has the longitudinal rod 57 is combined. A roller support plate 59 in the form of a plate is connected to the tip of the longitudinal rod 57 of the cylinder 58 with a longitudinal guide, and the roller support plate 59 is connected to the roller support plate 59 via a shaft 60 and a spring 61. A magnetic ring 51 is provided to be movable, and a grooved roller 50 is rotatably supported by the ring 51.

Then, the cylinder device 52 is driven in connection with the opening operation of the hook 34, by which the grooved roller 50 is indicated by arrows a, b, c in FIG. After descending to a predetermined position (arrow a), laterally transverse to the lower side of the tube 13 (arrow b), then ascending to receive the tube 13 (arrow c), and ejecting outward (arrow) d) operate. This operation will be described in detail. First, in the state where the hook 34 is closed, the tube 13 is aligned with the position of the hook 34 by the pressing piece 49 of the rodless cylinder 46, and then pressed. Return piece 49. Next, the grooved roller 50 is lowered (arrow a), and then pulled toward the hanger 33 side (arrow b), and the grooved roller 50 is aligned with the outermost tube 13 position. Raise (arrow c). After opening the hook 34 at the place where the grooved roller 50 took over the tube 13, and withdrawing the tube 13 from the hanger 33 (arrow d). Close the hook 34 again. By this operation, the tube 13 is taken out of the hanger 33 by one degree, and preparation for sending to the delivery means 32 is completed.

In addition, the grooved roller 50 and the ring 51 are rotatably supported by the shaft 60 at the tube ejection position, and are always arranged in the tube ejection position by the spring 61, but the subsequent tube When the U-shaped curved portion at the end of the band passes by the insertion operation, the operation of avoiding the tube insertion direction through the shaft 60 is possible. As a result, the tube 13 is smoothly sent to the partition plate 14 side.

Next, the configuration and operation of the tube dispensing means 32 will be described with reference to FIGS. 4 and 5. FIG. 4 is a perspective view of the whole, and FIG. 5 is a partial side view, and some configurations are different from those of FIG.

As shown in Fig. 4, the tube dispensing means 32 is disposed on the partition plate 14 side of the tube dispensing unit, that is, on the working side, and has a support plate 62 fixed to the dispensing support arm 26. The base 64 of the longitudinally long sheet | seat and this base 64 which were provided in this support plate 62 so that the movement was possible in the X direction through the rail-shaped linear guide 63 for sending a rail part are carried out, and this base 64 is the same direction. It has a sending air cylinder 65 for moving to the inside, and the base 64 is provided with one sending unit 66 up and down. These delivery units 66 each have a roller support frame 68 supported on the base 64 so as to be able to be lifted and lowered through a straight guide 67 for moving east and west. In the roller support frame 68, the guide roller 69 which supports the front-end | tip of the tube 13, respectively, and the downstream side of the tube insertion direction (X direction) of the guide roller 69 in the roller support frame 68 are arrange | positioned, The delivery drive roller 70 and the driven roller 71 which rotate in the state which sandwiched (13), and convey to the partition plate 14 side are provided.

In detail, the upper and lower roller support frames 68 form an L shape and face each other in the vertical direction, and the roller support frames 68 are provided with a motor 72 and a drive screw shaft 73 provided on the base 64. ), And the rollers 69, 70, 71 can be matched with the width dimension between both sides of the tube 13 by this. The guide roller 69, the drive roller 70, and the driven roller 71 are arrange | positioned at the opposite side of the lower surface which opposes each other of these roller support frames 68, respectively. The guide roller 69 has a U-shaped groove and faces up and down, and is provided at the front edge of the roller support frame 65 by the roller support 74. The driving roller 70 and the driven roller 71 each have a V-shaped groove, and the plurality of the driving rollers 70 and the driven rollers 71 are arranged in parallel on the opposing surfaces of the roller support frame 68 in an arrangement in which a plurality of the rollers face each other.

For example, one front and rear driven rollers 71 are disposed on the left side in the direction of sending the tube (X direction in FIG. 4), and these driven rollers 71 are clamp guides provided in the roller support frame 68. It is supported by a clamp 76 that is movable along 75. The clamp 76 is connected to the clamp air cylinder 77 provided on the non-facing surface side of the roller support frame 68 via a connector 78, and the widthwise position for tube insertion by the driven roller 71. Adjustment is made. On the right side, a pair of front and rear drive rollers 70 and a driven driven roller 71 for measurement arranged between them are fixedly arranged.

Each drive roller 70 is rotationally driven by a drive motor 79, a drive belt 80, and a drive gear 81 provided on the non-facing surface side of the roller support frame 68. The driven driven roller 71a for measurement is connected to an encoder 82 provided on the non-facing surface side of the roller support frame 68. By this encoder 82, the feed speed of the tube 13 is detected based on the rotation speed. Moreover, since the driving roller 70 and the driven roller 71 which inserted the tube 143 have a V-shaped groove, even if the diameter of the tube 13 changes, it is possible to cope with urethane rubber in this V groove. The lining is provided so that the tube 13 will not be damaged even if the clamping force is too strong.

In the tube dispensing means 32 of such a structure, after adjusting each roller space | interval corresponding to the tube width and diameter, the base 64 is moved forward and backward along the X direction, and the above-mentioned tube extracting means 30 is carried out. The partition plate 14 is supported by the rotation of the drive roller 70 and the driven roller 71 while supporting the front end side of the opening end of one tube 13 taken out by the guide roller 69. To the side.

The tube delivery means 32 of the structure shown in FIG. 5 is provided with the introduction mechanism 84 which attached the air chuck 83 instead of the said guide roller 69. As shown in FIG. The introduction mechanism 84 to which the air chuck 83 is attached moves the left and right air chucks 83 opened and closed by the opening and closing air cylinder 85 in the X direction by the moving air cylinder 86, respectively. The tube 13 is reciprocated independently in the insertion direction of the tube 13 so as to guide the tube 13 to the site of the driving roller 70 and the driven roller 71 in the tube extraction means 30. Therefore, the drive roller 70 and the driven roller 71 may be fixedly arranged in the X direction.

In addition, in the tube delivery means 32 of FIG. 5, the cylinder apparatus 87 for inserting the band end part which is the U-shaped curved part of the rear end of the tube 13 to the partition plate 14 side is provided. The cylinder device 87 includes an insertion air cylinder 89 in which the operation rod 88 faces the partition plate 14 side, and an insertion bracket mounted through the force gauge 90 at the distal end of the operation rod 88 ( 91, the tube 13 is inserted into the partition plate 14 to the final position. In this configuration, the function of stopping the operation of the air cylinder 89 by a signal from the force gauge 90 when a force higher than a prescribed value is applied to the final position is added, thereby fully automating the delivery means 32. Is being planned.

In the tube assembly apparatus of this embodiment which has the above structure, in the packing box 22 by the tube holding means 28, the tube positioning means 29, the tube taking out means 30, and the tube sending means 32. The plurality of tubes 13 are taken out and placed in a stacked state, and only one tube 13 of the tubes 13 is removed without interfering with the other tubes 13, and the tube 13 is sent out to the partition plate 14 to feed the water heater. (11) can be pasted.

In addition, in the delivery means 32 of the structure shown in FIG. 4, since the opening end of the upper and lower sides of the tube 13 is operated by the drive motor 72 separately, the locking and drive by the partition plate 14 side are carried out. An error may occur in the feed amount due to an operation error of the motor 72 or the like. However, in order to prevent deformation or damage of the tube 13, a function of detecting an operating speed is added to each of the operating parts, and the speed error is automatically corrected. The operation control means for absorbing is adopted. For example, the function of detecting the feed operation speed reads the pulse amount of the encoder 82 directly connected to the measuring follower roller 71a which is installed up and down at the control panel side, and a deviation of the specified pulse amount or more from the upper and lower pulse amounts is generated. In this case, this can be achieved by outputting an abnormal signal. In addition, even when the tube 13 collides with the partition plate 14 and the feeding stops, the feeding stop control is performed by the encoder 82 which detects the operation speed.

In addition, after the insertion of the tube by manual operation at the time of insertion of the first tube, the insertion position of the tube 13 to be sent out is calculated from the first coordinate position and automatically determined. This can make the work unnecessary. The same function may be applied to the tube dispensing means 30, and the movement of the hanger 33 to the position of the tube for the next dispensing in the packing box 22 may be achieved by the width and the processing position of the tube 13 to be withdrawn. The adjustment is automatically performed without the need for such adjustment.

In the tube dispensing means 30, the grooved roller 50 supporting the upper side of the tube 13 is rotatable in the advancing direction by the ring 51 and the spring 61. In the case of contact with the U-shaped bent portion of (13), by forcibly turning to avoid the U-shaped curved portion of the tube 13, the feeding after the tube 13 is taken out is performed smoothly. It is also employable for the roller support 74 of the guide roller 69 in the delivery means 32 shown in FIG.

As shown in FIG. 1, the control system for controlling the operation of each component part includes a control panel 92 mounted on the L-shaped frame 21, an operation panel capable of performing data input, total operation, operation monitor, and the like. (93), a first operation box 94 capable of carrying out operations such as tube gripping and tube ejection, and a second operation box 95 capable of operating the tube delivery means 32. . The touch panel is used for the first and second operation boxes 94 and 95 by switching between automatic and manual operation of necessary items or for the operation panel 93 for data input, overall operation, monitor, and space saving. By switching the screens according to the respective modes, the extra switch is removed. In addition, the control panel 92 and the operation boxes 94 and 95 are also provided with an emergency stop switch separately from the operation system in order to prevent malfunction. As for the cables of the control system, multi-core metal outlets are applied so that the cables are separated in units of the disassembly unit starting from the control panel 92.

In addition, the servo motor is attached to the portion where the position needs to be stored, and the operating position of the device is stored at any time. For example, there is no tube 13 in the hanger 33, and the next carton 22 is taken. Afterwards, it is possible to return to the same position again. In the tube insertion operation, the insertion coordinate position is calculated from the size of the tube 13 in the hanger 33, and the dispensing means 32 is automatically aligned to the insertion position. To make it possible.

In addition, the rotary actuators 45 and 47 which are operating parts, such as the support arm 35 and the hook 34 of the tube drawing-out means 30, apply all driven by air, collide with an obstacle, or may be in overload condition. In such a case, in order to prevent damage to the tube 73 or the like, further operation is stopped and error signals and alarms are generated. In addition, the hanger 33 is also capable of detecting excessive opening when the tube is taken out, excessive falling into the packing box 22, positional shift, and the like, so as to generate an error signal and an alarm. By these detection operations, malfunctions can be prevented, accidental accidents can be prevented, and intrinsically safe.

Next, with reference to FIG. 6 and FIG. 7, the attachment device of the tube 13, the partition plate 14, etc. for carrying out a tube insertion well and safely are demonstrated. 6 is an overall configuration diagram, and FIG. 7 is a partially enlarged view.

As described above, on the work cart 16, the partition plate 14 for inserting the tube 13 is height-adjusted so that the center of the hole 15 is horizontal, and the tube 13 A plurality of supports are separated at appropriate intervals according to the length of. In the case of inserting the tube 13 into these partition plates 14, the tube 15 is assembled in the hole 15 of the first partition plate 14 or 14a closest to the tube dispensing means 32, and adjusted on the mounting side. It can be positioned in the height direction, so it is inserted smoothly. However, when the tube 13 passes through the second partition plate 14 or 14b, due to the fact that the hole 15 of the partition plate 14b is larger than the outer diameter of the tube 13 by an insertion interval, The tip of the tube 13 is lowered by the interval, and the bend of the tip of the tube 13 is added by the gap of the partition plate 14. For this reason, the tube 13 may collide with the partition plate 14b and damage the partition plate 14b or the tube 13.

Therefore, in this embodiment, as shown in FIG. 6 and FIG. 7, the cone-shaped cap 96 in which the tapered tip was sharply attached to the tip of the tube 13 was loaded at the same time. A guide member 97 having a curved surface for guiding the cap 96 is provided in the hole 15 at the lower front surface of the partition plate 14b. For example, the cap 96 is made of a material having a low surface hardness, such as resin, and a small coefficient of friction. In addition, the guide member 97 is formed in an L-shape having a circular arc shape on one side of the metal, and is attached to the magnet stand 98 so that the guide member 97 can be detachably attached to the partition plate 14b.

By using the attachment of such a structure, even if there is a bend at the tip of the tube 13, the bend of the tube 13 is corrected according to the guide member 97, so that the insertion into the second partition plate 14b is prevented. It is done smoothly. In addition, with regard to the insertion of the tube 13 into the hole 15 of the third and subsequent partition plates 14 or 14c, the tube 13 is already formed by the first and second partition plates 14a and 14b. Since it is in a stable state, in particular, the mounting of the guide member 97 is often unnecessary. However, the guide member 97 may be provided to increase the safety even higher.

Next, with reference to FIGS. 8-11, the packing box 22 and the tube 13 accommodated in it are demonstrated. FIG. 8 is a perspective view showing the appearance of the packing box 22, FIG. 9 is a plan view showing a state where the packing box 22 is opened, and FIG. 10 is a side cross-sectional view of FIG. 11 is a perspective view showing an application example.

As shown in FIG. 8, the packing box 22 is made of wood, and is comprised by the box main body 100 of the long shape which opened the upper surface, and the cover 101 divided into several. In addition, the lid is fastened to the box body by using a band-like metal fitting 102 such as a metal band, without using nails for packing, so that the cover 101 is easily opened. It is.

Thus, as shown in FIGS. 9 and 10, the packing box 22 allows the tube 13 to be extended laterally and accommodated in a direction in which the U-shaped curved portion becomes horizontal, and the tube 13 is U-shaped. In a state where a plurality of different kinds of radii of curved portions are arranged inward and outward, they are stacked for each one having the same radius. In the packing box 22, the sleeper 103 in which the lowest tube 13 is carried is provided, and the longitudinal direction for collapse prevention which divides the tube 13 by every radius of a U-shaped curved part is carried out. The long tube spacer 104 is provided at intervals in the longitudinal direction of the tube 13, and a collapsing preventing jig 105 is disposed between both sides of the tube 13, and these are integrally formed to form a tube. (13) is stored in a state where it does not fall.

This prevents the collapse of the tube 13 stored in the packing box 22 during transportation, maintains uniformity between the poles of the tubes 13, and hangers 33 and the like of the tube dispensing means 30. It is supposed to be done without interruption. Moreover, the sleeper 103 is set to the height which can ensure sufficient clearance between the bottom plate 106 of the packing box 22, and even if the tube 13 bends, the hanger of the said tube extraction means 30 is carried out. Interference with the hook 34 at the bottom of (33) is prevented.

Moreover, the above-mentioned resin cap 96 is attached to the end of the opening end of the tube 13 accommodated in the packing box 22, and the tube taking-out means immediately in the state which opened the packing box 22. As shown in FIG. It takes out by 30 and can be used for assembly.

In addition, after the required tube 13 is taken out by the tube dispensing means 30, the remaining tube 13 is separated from the spacer 104 or the like and is in a state in which collapse easily occurs. Therefore, in order to prevent this collapse, as shown in FIG. 11, the small piece 107 piled up on the left tube 13 and the nut 108 etc. are connected to the both ends of the small piece 107. And a simple tube support jig 110 having rods 109 hanging on both sides of the tube 13 is provided.

As shown in FIG. 11, this tube support fixture 110 is attached to the tube 13 in the packing box 22, and it collapses until the tube 13 is taken out from the tube extraction means 30. FIG. The stacked state of the tube 13 can be maintained without causing.

Next, a tube assembly method will be described with reference to FIGS. 12 and 13. FIG. 12 is an explanatory diagram showing an example of groove division of the partition plate 14 hole 15, and FIG. 13 is an explanatory diagram showing another example.

In the method of this embodiment, the hole 15 of the partition plate 14 is divided into several groups which consisted of one group including the radius of the U-shaped curved part of the tube 13 which should be inserted into this, Divide the tubes stored in the packing box 22 corresponding to each group, insert all of the tubes 13 in one group into the corresponding holes 15, and then change the order of the packing boxes 22 to the next packing box. Assemble the tube of (22).

In the example of FIG. 12, the hole 15 of the partition plate 14 is divided into five groups G1-G5. That is, to distinguish it by the virtual boundary line S (actually there is no S line), G1 leaves the hole 15 in the range of the constant upper and lower widths of the center of the partition plate 14 in a band shape with a small left side. G2 is a group enclosing the hole 15 of the right part of the partition plate 14 in the fan-shaped range, and G3, G4, G5 is the inclination boundary line S which extends the remaining part to the right, respectively. It is a group divided into approximately equal parts from right to left in order.

Then, at the center side of the hole 15 belonging to the group of G1 (the first hole). Among the U-shaped tubes 13, the one with the smallest radius of the U-shaped curved portion is inserted. Next, the tube 13 with the smallest radius of the U-shaped curved portion is inserted into the hole (the second (excellent) hole) 15 adjacent to the upper and lower sides thereof. In the same manner, the tube assembly is inserted into all the holes 15 belonging to the group G1 by inserting the tube 13 having the larger diameter in the order of odd and even numbers.

Next, it moves to the group of G2 on the right side. Similarly to the above, in the group of G2, the tube 13 having the larger diameter of the curved portion is inserted next in the order of the odd and even numbers. Here, the group of G2 is divided into other groups in the inclined boundary S extending to the right as a fan-shaped range, and the U-shaped curved portion first inserts the tube 13 having a large diameter into a small diameter tube ( This is because the hole 15 through which 13 is to be inserted is hidden. This also applies to the boundary of the following groups G3, G4, and G5.

In this way, after assembling of the tube 13 to all the holes 15 belonging to the group of G2 is finished, the order from the right to the right is the same in the order of G3, G4 and G5, respectively, from the right side to the left side as described above. The tube 13 with a large diameter of the furnace curved portion is inserted to complete the assembly of all the tubes 13.

In this case, in this embodiment, the kind of the tube 13 accommodated in the above-mentioned packing box 22 is set to plural kinds of different diameters corresponding to G1, G2, G3, G4, G5. In this way, the U-shaped curved portions are packaged by dividing the tubes 13 having various diameters into various groups. When assembling the tubes, the packing boxes 22 are arranged in the vicinity of the apparatus in the order of G1, G2, G3, G4, and G5. It is carried out by placing it temporarily and conveying the thing of each diameter to the loading stand of the L-shaped frame 21 in order. Therefore, the processing of the packing box 22 is not complicated, the assembly is performed efficiently, and the waiting space of the packing box 22 is also reduced.

In the example of FIG. 13, the hole 15 of the partition plate 14 is divided roughly into three, and is divided into groups G1-G3. In this case, for example, each group G1, G2, G3 is divided into substantially equal parts in the order from right to left on the inclined boundary line 5 extending to the right, respectively. Also in this example, as in the case of FIG. 12, in the order of G1, G2, and G3 from right to left in the same manner as above, the tube 13 having the larger diameter of the curved portion is inserted next in the order of radix and even. The assembly of all the tubes 13 is completed. In this example, the same procedure as described above is performed, the processing of the packing box 22 is not complicated, the assembly is performed efficiently, and the waiting space of the packing box 22 is also reduced.

Next, with reference to FIG. 14, the conveyance method of the packing box 22 is demonstrated. 14 is a side view showing a conveyance state of the use of the conveyor.

As shown in FIG. 14, in the method of this embodiment, the conveyor 111 and the stopper 112 are provided in the loading stand 23 of the L-shaped frame 21 which is the working part of the packing box 22. As shown in FIG. At the same time, the 2nd conveyor 115 which can move up and down is provided in the vicinity of the mounting base 23 with the base 113 and the hydraulic mechanism 114. FIG.

According to this method, the packing box 22 is moved and stacked on the conveyors 111 and 115 by the forklift 116 to drive the conveyors 111 and 115. The cover 101 of the packing box 22 can be introduced into the apparatus in a state where it is opened in an external procedure, thereby positioning and shortening preparation time. In addition, since the introduction and removal of the packing box 22 to the mounting table 23 are performed by moving the conveyor box, transportation by the crane of the packing box 22 becomes unnecessary, and the tube assembly work regardless of other operations. This is done.

Next, a parallel operation or a sequential operation method will be described with reference to FIG. 15 is a plan view showing the arrangement of the device.

As shown in FIG. 15, in this embodiment, in the tube simmering method, the partition plates 14 of the plurality of heat exchangers 11 are arranged in parallel, and the partitions of the respective heat exchangers 11 of these plates are arranged. Tube assembly to the plate 14 is performed by parallel work or sequential work. In other words, a plurality of partition plates 14 to be assembled are mounted on a plurality of, for example, three horizontally movable work carts 16 to prepare in parallel. As for the work cart 16 or 16a shown in the upper part of the figure, since the tube assembly is completed thereon, welding fixation of the cylindrical frame 12 with respect to this water heater 11 can be performed at the tube assembly work position. have. Then, as shown in the middle of the figure, the next tube assembly can be directly performed on the work cart 16 or 16b provided in the adjacent place. In addition, on the work trolley | bogie 16 or 16c shown in the lowest part of the figure, it can be made to stand by for the subsequent tube assembly. According to such a method, a plurality of work carts 16a, 16b, and 16c are used, parallel work or sequential work is performed, and preparation time at work switching can be shortened.

In addition, although the L-shaped frame 21 was applied as the apparatus base in the above embodiment, this is the best example, and it is also possible to set it as a door frame in some cases. FIG. 16 is a schematic perspective view showing the device configuration when the door frame is applied.

In this example, the takeout part support frame 26 is provided on the opposing door-shaped frame 21a, and the mechanism similar to the said embodiment is assembled to this takeout part 26. As shown in FIG. Even with such a configuration, higher efficiency can be achieved as compared with the prior art. However, in this example, workability becomes low because of the relationship between the mechanism and the storage location of the packing box 22. This will be compared with the simplified explanatory drawing shown in FIG. 17 and FIG. In the door-shaped frame 21a as shown in FIG. 17, the door width is required more than the maximum length of the packing box 22, and a large space is required because the frame for preparing the packing box 22 becomes an obstacle. Shall be. On the other hand, in the L-shaped frame 21 like FIG. 18, since the space can be enlarged and utilized in the form of one support frame, the longitudinal direction and the lateral direction of the packing box 22 can be made free.

In addition, although the above embodiment demonstrates assembly of the U-shaped tube 13, this invention is not limited to this, The tube holding means 28, the tube positioning means 29, One side of the U-shaped tube 13 in the tube dispensing means 30 and the tube dispensing means 32 can be used to assemble a tube for heat exchange in a linear form.

According to the above embodiment, the following effects are acquired.

That is, in the past, when work by a crane is interposed, depending on the progress of other work, there is a possibility that a stagnation time may occur in the tube assembly work itself, but according to the present embodiment, there is no effect, Saving is planned. In addition, the tube 13 includes a tube take-out means 28 for directly taking out the required number of tubes 13 from the packaging box 22 on the apparatus side, and the tubes 13 in the packaging box 22 installed in the apparatus. Since the work suspended by the crane becomes unnecessary during the insertion, the work of the crane can be minimized, and the work process can be shortened.

In addition, as shown in FIG. 1, since the two packing boxes 22 can be placed on the mounting table 23, the received tube 13 can be packaged by dividing it into a means and an even stage, and skipping one by one. Although it can accommodate each other, the space | interval between each tube 13 is very narrow also in that, since the tube 13 is long, there are many entrances and exits, and there are many dispersion | distributions between poles. As a countermeasure, the tube taking-out means 28 is provided with a function of pulling in and pushing the narrow part and lifting the tube, so that the tube 13 can be taken out from the packing box 22 without difficulty.

Incidentally, supporting the tubes 13 as they are stacked is easy to collapse because the diameter of the tube 13 is small and the overall length is long. In this embodiment, the tube holding means 28 is prevented from collapse. As a countermeasure, a support arm 35 is added to the hanger 33, so that the tube ejecting means 28 can reduce the load applied near one unit by retaining a large number of units supporting the same mechanism. The unit itself can be miniaturized.

In addition, by adopting the L-shaped frame 21, the packing base 72 can be prepared in a state where one side is opened by using the device base as one support arm type, so that the frame does not become a barrier and the space is increased. do. In addition, about the insertion work of the tube 13, the tube located in the loading position after the tube extraction is taken out one by one by the tube extraction means 30, and the tube insertion means is efficiently and reliably taken out by the tube delivery means 32. Can be done. In addition, since the apparatus of the present embodiment can be divided into several units, when not in use, the apparatus is divided into units and stored, and the storage space can be minimized.

Moreover, according to the method of this embodiment, it is the minimum number of packaging boxes 22 required, the tube 13 accommodated in the packaging box 22 is inserted into the hole 15 of the partition plate 14 whole, and is packed. The preparation of replacing the box 22 is performed, and the tube of the next packing box 22 is assembled, and work is performed in the minimum space required. In addition, when the tube 13 is sent out to the partition plate 14, part of the mechanism can be evacuated, so that the U-shaped curved portion at the rear end of the tube can be sent during the tube insertion operation. Smooth operation is performed without disturbing the transfer operation in 13).

In addition, since a control mechanism capable of inputting work data in advance and moving and inserting the tube insertion position by self-determination is provided, the next tube position is self-determined from the tube position of the packing box 22 which is first taken. In addition, the tube 13 can be taken out, and the actuator in use can ensure the work quality, and also has an abnormal load detection function, thereby preventing the possibility of an accident. Also, stability can be improved.

As described above in the above embodiment, according to the present invention, the tube insertion work entrusted to the manual work can be mechanized, and the tube can be automatically inserted continuously by automatically storing the tube insertion coordinate position by automatic control. It is possible to complete the operation without taking out the tube from the packing box without using a crane and to shorten the working time. In addition, it is possible to reduce the work space, and to apply an air actuator as an operation driving source of the part in contact with the tube, and to improve the quality and safety at the same time. Effects such as space reduction of the film can be achieved.

Claims (31)

A tube assembly device for assembling a U-shaped tube for heat exchange, the intermediate portion of which is bent into a U-shape, into a hole of a partition plate disposed in a casing of a heat exchanger, by automatic insertion from the end of the opening. A plurality of parts are placed on the mounting part with the parts facing the holes of the partition plate, and are lowered toward the mounting part and collectively grip one side of the stacked U-shaped tube, and then rotate about 90 degrees upwards. Gripping means for holding the bent portion of the male tube in the vertical direction, the tube gripped by the tube holding means in the vertical (Z-axis) and horizontal (Y-axis) movement, U-shaped tube insertion direction (X A tube positioning means for positioning the gripped U-shaped tube at an insertion position with respect to the hole of the partition plate by rotating around the axis of the shaft; A tube taking-out means having a U-shaped tube gripped by the supporting means one by one from the stage and a means for receiving the U-shaped tube one by one in association with the sending means; and a U-shaped tube taken out by the taking-out means And a tube dispensing means for driving toward the side of the partition plate and inserting the opening end of the U-shaped tube into the hole of the partition plate. According to claim 1, wherein the working portion is provided with a mounting table for mounting the packing box containing the tube, the packing box is accommodated in the direction that the tube lengthwise and the U-shaped curved portion of the end of the band horizontally The tube assembly apparatus for heat exchanger of the heat exchanger, which is opened upward, and the tubes are stacked on the inner and outer sides of a plurality of kinds having different radii of the U-shaped curved portions. A longitudinally elongated tube spacer for preventing collapse that divides the tube for each different radius of the U-shaped bend is spaced in the longitudinal direction of the tube, and is arranged as an unbroken structure. Tube assembly device for heat exchange of heat exchanger, characterized in that there is. The tube holding means, the tube extracting means, and the tube dispensing means are a pair of parallel L-shaped frames that are movable on a guide rail disposed on an upper surface, and are supported via a lifting and lowering horizontal arm. Tube assembly device for heat exchange of heat exchangers. The take-out part supporting arm which intersects these on a horizontal surface is provided at the front-end | tip of a horizontal arm, The tube holding means and the tube take-out means are supported by this take-out support arm so that rotation is possible. Tube assembly device for heat exchange of heat exchanger. 6. A pair of L-shaped frames moving upwards and upwards, each horizontal arm supported and lifted up therein, a ejection support arm hypothesized on each horizontal arm, and an inverted beam rotatably provided on the support arm. And a tube positioning means for setting the insertion position by rotating the tube horizontally, vertically, and around the horizontal axis. The tube holding means and the tube extracting means are combined with each other to constitute a set of tube extracting unit, and the tube extracting unit is arranged in a plurality of sets at intervals along the longitudinal direction of the ejection support arm. Heat exchanger tube assembly apparatus characterized in that the heat exchanger. 3. The tube holding means according to claim 2, wherein the tube gripping means can be inserted into the packing box in a substantially vertical state, and at the same time, one side of a group of tubes stacked horizontally and stacked in one row up and down accommodated in the packing box. A thin-walled hanger capable of abutting the hook, a hook inserted below the lowermost tube projecting in the transverse direction at the bottom of the hanger, and the group of the group in a vertical state disposed in parallel with the hanger and rotatable by a rotary actuator. And a support arm which is capable of abutting the other side of the tube and at the same time has a lower end attached to the hook to sandwich the group of tubes with the hanger. The heat exchanger tube assembling apparatus according to claim 8, wherein the hook is configured to be rotatable in a direction in which the front end of the hanger and the support arm are opened by a rotary actuator. 10. The tube extracting means according to claim 9, wherein the tube ejecting means includes a press piece for extruding a plurality of tubes held by the hanger and the support arm of the tube gripping means toward the hook side of the hanger and the support arm tip, and an extrusion for driving the press piece. The cylinder with the groove, the roller having a groove for supporting one tube positioned on the hook side from below, the link supporting the grooved roller, and the link as the hook opens the hanger and the support arm tip. An apparatus for assembling heat exchangers for a heat exchanger, characterized in that it has a cylinder device which moves upward and downward and in a lateral direction to take out a tube supported by said grooved roller laterally. 11. The grooved roller according to claim 10, wherein the grooved roller and the linker supporting the grooved roller are rotatably supported by the shaft at the tube extraction position and at the same time the tube is always taken out by the spring. And a U-shaped curved portion passing through the tube when the tube is inserted into the tube assembly apparatus for heat exchanger. 12. The tube dispensing means according to claim 11, wherein the tube dispensing means includes a base, a roller support frame supported to move up and down to the base, a guide roller supported by the roller support frame and supporting the tube tip by reciprocating motion along the tube insertion direction. And a feeding drive roller and a driven roller which are disposed on the downstream side in the tube insertion direction of the guide roller of the roller support frame and are rotated in a state where the tube is sandwiched and conveyed to the partition plate side. Device. 13. The tube dispensing means according to claim 12, wherein the tube dispensing means is equipped with an air chuck to reciprocate in the tube insertion direction together with or instead of the guide rollers to guide the tubes from the tube dispensing means to the portions of the drive rollers and driven rollers. An apparatus for assembling heat exchange tubes of a heat exchanger, characterized by having an introduction mechanism. The heat exchanger tube assembly apparatus according to claim 13, wherein the tube dispensing means has a cylinder device for press-fitting the band end side, which is the U-shaped curved portion at the rear end of the tube, to the partition plate side. 15. The tube assembly apparatus for heat exchanger of heat exchanger according to claim 14, wherein the tube dispensing means has a force gauge in a cylinder apparatus for press-fitting the band end of the tube. The heat exchanger according to claim 1, wherein a cap with a tapered tip is loaded at the opening end of the tube, and a guide member for guiding the cap is provided in the lower portion of the partition plate. Tube assembly for heat exchange. 3. The tube gripping means according to claim 2, wherein the tube gripping means is provided with a self-determination function for automatically carrying out positioning of the tube gripping and taking out position after the next time based on the first tube gripping and taking out position in the packing box. Tube assembly device for heat exchange of the heat exchanger, characterized in that. The heat exchanger according to claim 1, wherein the tube dispensing means has a control function for automatically determining the position of the tube insertion position by self-determining the tube insertion position with respect to the hole of the partition plate based on the work data. Heat exchanger tube assembly device. The at least one operation part of the tube holding means, the tube positioning means, the tube taking out means, and the tube sending means has an abnormal load detection function, an automatic failure avoidance function, or an emergency stop function. Tube assembly device for heat exchange of heat exchangers. The tube assembly apparatus for heat exchange of a heat exchanger according to claim 1, wherein the tube dispensing means has a speed detecting means for detecting an operation speed of the discharging tube. A tube assembling method for assembling a U-shaped tube for heat exchange through a hole in a partition plate arranged in a casing of a heat exchanger by using the tube assembling apparatus for heat exchanger of the heat exchanger. And assembling and taking out a predetermined number of tubes in a state of being coupled to a packing box, loading them to a predetermined insertion position, taking them out one by one at this loading position, and inserting them into the holes of the partition plate to assemble them. How to assemble a tube for heat exchange of the heat exchanger. 22. The method of claim 21, wherein the holes of the partition plate are divided into a plurality of groups in one group, including different radiuses of the U-shaped bends of the tubes to be inserted therein, and stored in the packing boxes corresponding to each group. A method for assembling tubes for heat exchangers, characterized in that the tubes are separated, the tubes of one group are inserted into the holes, and the order of the packing boxes is changed to assemble the tubes of the next packing box. 23. The method according to claim 22, wherein when the tube is taken out of the packing box, the U-shaped curved portion at the band end side of the tube is in a horizontal state, and the U-shaped curved portion is vertical in a position where the taken-out tube is loaded. And a tube having a small radius of the U-shaped curved portion inserted into the holes of the partition plate sequentially. 22. The method of assembling heat exchange tubes according to claim 21, wherein a plurality of heat exchangers are arranged, and tube assembly for each heat exchanger is performed by parallel work or sequential work. 22. The method of assembling a heat exchanger tube according to claim 21, wherein the introduction of the packing box to the work site and removal of the work box are carried out by using a conveyor. A tube assembly method for carrying out the method of claim 21 using the tube assembly apparatus for heat exchange of a heat exchanger according to claim 1, wherein the U-shaped tube of the tube holding means, the tube positioning means, the tube taking out means, and the tube feeding means is used. A method for assembling a heat exchanger tube for a heat exchanger, comprising assembling a linear heat exchanger tube using a portion that handles one side. A tube take-out apparatus which takes out one by one while supporting a plurality of heat exchange tubes in parallel and sends them out in one direction, comprising: a pressing piece for extruding a plurality of tubes, an extrusion cylinder for driving the pressing piece, and a hook side A grooved roller for supporting a tube located below, a link for supporting the grooved roller, and the link up and down while the hook is rotated as the hook opens the hanger and support arm tip. And a cylinder device which moves laterally and takes out the tube supported by the grooved roller laterally. 28. The grooved roller according to claim 27, wherein the grooved roller supporting the tube from below and the linkage supporting the grooved roller are pivotally supported by the shaft at the tube take-off position and at the same time the tube take-off position by the spring. And a U-shaped curved portion passing through the tube when the tube is inserted, and the tube ejecting device is operable to retreat in the tube insertion direction via the axis. A tube feeding device for receiving a heat exchange tube at a fixed position and discharging it toward one direction, comprising: a base, a pair of roller support frames which are supported on the base so as to be liftable and arranged at the top and bottom of the U-shaped tube; The guide roller which receives the tube tip by reciprocating motion according to the tube insertion direction supported by this roller support frame, and the tube arrange | positioned in the state which clamped the tube arrange | positioned downstream of the tube insertion direction of the said guide roller of the said roller support frame are partitioned, A tube delivery device having an upper drive roller and a lower drive roller for tube delivery to the plate side. 30. An introduction mechanism as set forth in claim 29, having an introduction mechanism with an air chuck for reciprocating in the tube insertion direction with or without a guide roller to guide the tube to a portion of a drive roller and a driven roller. Tube feeder. 30. The feeding amount detected by each measuring driven roller according to claim 29, wherein a measuring driven roller for detecting an upper feeding amount and a lower feeding amount of the U-shaped tube is disposed in the vicinity of the upper driving roller and the lower driving roller for feeding the tube. And a feeding stop control means for stopping the feeding device when the difference is greater than or equal to a predetermined value.

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